Corrosion inhibition bactericide for oil fields, and preparation method thereof

A bactericide and corrosion-inhibiting technology, applied in the field of oil field corrosion-inhibiting bactericides and their preparation, can solve problems such as poor bactericidal effect, and achieve the effects of slowing down corrosion and inhibiting the growth of bacteria

Inactive Publication Date: 2019-04-30
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a corrosion inhibitor and bactericide for oil field and its preparation method, which is

Method used

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  • Corrosion inhibition bactericide for oil fields, and preparation method thereof
  • Corrosion inhibition bactericide for oil fields, and preparation method thereof
  • Corrosion inhibition bactericide for oil fields, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0090] Example 1

[0091] Embodiment 1 of the present invention provides a corrosion inhibitor and bactericide for oil fields.

[0092] The polymerized organic guanidine is prepared by the following steps:

[0093] In a four-necked flask equipped with mechanical stirring, reflux condenser, thermometer and ammonia absorption device, 11.88 parts by weight of diacetyl hexamethylene diamine, 5.28 parts by weight of guanidine hydrochloride and 10.89 parts by weight of ethylene glycol were respectively added in proportions , Heating to 100°C, reacting for 4h, then heating up to 180°C, and continuing to react for 2h to obtain polymerized organic guanidine.

[0094] Preparation method of corrosion inhibitor for oil field:

[0095] First, add the 10 parts by weight of oleic hydroxyethyl imidazoline and the 20 parts by weight of dodecyl dimethyl benzyl ammonium chloride into the reaction kettle, stir and heat to 50°C,

[0096] Then add the 3 parts by weight of hydroxyethylidene diphosphonic acid ...

Example Embodiment

[0110] Example 2

[0111] Embodiment 2 of the present invention provides a corrosion inhibitor for oil fields.

[0112] The polymerized organic guanidine is prepared by the following steps:

[0113] In a four-necked flask equipped with mechanical stirring, reflux condenser, thermometer and ammonia absorption device, 12.48 parts by weight of diacetylhexamethylene diamine, 9.36 parts by weight of guanidine hydrochloride and 10.58 parts by weight of ethylene glycol were respectively added in proportions. , Heating to 100°C, reacting for 4h, then heating up to 180°C, and continuing to react for 2h to obtain polymerized organic guanidine.

[0114] Preparation method of corrosion inhibitor for oil field:

[0115] First, add the 8 parts by weight of oleic acid-based hydroxyethyl imidazoline and the 17 parts by weight of dodecyl dimethyl benzyl ammonium chloride into the reactor, stir and heat to 45°C,

[0116] Then add the 1 part by weight of hydroxyethylidene diphosphonic acid and the 1 part ...

Example Embodiment

[0130] Example 3

[0131] Embodiment 3 of the present invention provides a corrosion inhibitor and bactericide for oil fields.

[0132] The polymerized organic guanidine is prepared by the following steps:

[0133] In a four-necked flask equipped with mechanical stirring, reflux condenser, thermometer and ammonia absorption device, respectively add 9 parts by weight of diacetylhexamethylene diamine, 5.5 parts by weight of guanidine hydrochloride and 5.25 parts by weight of ethylene glycol in proportions , Heating to 100°C, reacting for 4h, then heating to 180°C, and continuing to react for 2h to obtain polymerized organic guanidine.

[0134] Preparation method of corrosion inhibitor for oil field:

[0135] First, the 13 parts by weight of oleic hydroxyethyl imidazoline and the 22 parts by weight of dodecyl dimethyl benzyl ammonium chloride are added to the reaction kettle, and the mixture is heated to 45°C with stirring.

[0136] Then add the 5 parts by weight of hydroxyethylidene dipho...

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Abstract

The invention discloses a corrosion inhibition bactericide for oil fields, and a preparation method thereof, wherein the corrosion inhibition bactericide comprises: 8-13 parts by weight of oleic acidhydroxyethyl imidazoline, 17-22 parts by weight of dodecyldimethylbenzyl ammonium chloride, 1-5 parts by weight of hydroxyethylidene diphosphonic acid, 1-5 parts by weight of aminotrimethylene phosphonic acid, 1-3 parts by weight of ethylene glycol, 20-31 parts by weight of polymerized organic guanidine, and the balance of water. According to the present invention, the corrosion inhibiting bactericide can retard the corrosion on the collection system and the transportation system of oil fields, and can inhibit the growth of bacteria; and when the amount of the corrosion inhibition bactericideis 50 mg/L, the corrosion inhibition rate is above 75%, the corrosion rate can be controlled at below 0.076 mm/a, and the sterilization rate is above 99%.

Description

technical field [0001] The invention relates to a corrosion inhibitor and bactericide for oil fields and a preparation method thereof. Background technique [0002] During the development and production of crude oil, the collection system and transportation system of the oil field are directly eroded and electrochemically corroded by inorganic acids (such as hydrogen sulfide, carbonic acid, and hydrochloric acid), organic acids, and salts in the oil-water mixture. Moreover, with the exploitation of oilfields, the water content in crude oil continues to rise, and sulfate-reducing bacteria, saprophytic bacteria, and iron bacteria in the oil-water mixture also continue to grow, further aggravating the corrosion of the collection system and transportation system. Corrosion and bacteria in the oilfield collection system and transportation system promote each other, bacteria intensify corrosion, corrosion promotes bacterial growth, and a vicious circle. [0003] The use of corros...

Claims

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Application Information

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IPC IPC(8): C09K8/54A01N57/20A01N43/50A01N33/12A01N47/44A01N31/02A01P1/00
CPCA01N31/02A01N33/12A01N43/50A01N47/44A01N57/20C09K8/54C09K2208/32
Inventor 商芳杜清珍谢刚李梦瑶闫暄崎魏爱军姜伟祺张伟王丹丹刘志刚
Owner PETROCHINA CO LTD
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